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What is the Asthenosphere
A. the middle portion of the mantle; not very dense
B. the middle portion of the mantle; extremely dense
C. the outer layer of the earth's crust
D. the inner core of the earth

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ItzChocolateRiza

Answer:

What is Asthenosphere?

Ans) The Lithosphere floats on top of a semi-liquid layer. This is known as the Asthenosphere. It is the ductile inner layer of the upper mantle.

So ur accurate answer is option b.

Hope this helps you...

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